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MrMuchimi
3 years ago
9

How do similarities in the bones of humans dolphins and horse and

Chemistry
1 answer:
Andrej [43]3 years ago
6 0
It provides evidence that each organism is related and similar in each way, leading to the conclusion of a common ancestor.<span />
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Give the electron configurations for the elements given. use the noble gas core preceding for the inner electrons.
Umnica [9.8K]
Noble Gas Cores have following electronic configuration

He  =  1s²
Ne  =  [He] 2s², 2p⁶
Ar  =   [Ne] 3s², 3p⁶
Kr  =   [Ar] 4s², 4p⁶
Xe  =  [Kr] 5s², 5p⁶

Now solving for question elements,

Germanium = Ge  =  [Ar] 3d¹⁰, 4s², 4p²

Nickle = Ni  =  [Ar] 3d¹⁰, 4s²

Tunsten = W  =  [Xe] 4f¹⁴, 5d⁴, 6s²

Titanium = Ti  =  [Ar] 3d², 4s²

Iron = Fe  =  [Ar] 3d⁶, 4s²

Zinc = Zn  =  [Ar] 3d¹⁰, 4s²
6 0
3 years ago
What are chemical changes of sodium hydroxide
pochemuha

Answer: Sodium + water → hydrogen gas + sodium hydroxide (aq) + heat [(aq) means “dissolved in water”. It stands for “aqueous”.] If we boil off the water, we will be able to see the sodium hydroxide crystals. The sodium hydroxide is one of the two new substances produced by this chemical change.

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What did most of the particles that Rutherford shot at the gold foil do? What was the surprising behavior of a few of the partic
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Answer:

Explanation:

Rutherford gold experiment gave the explanation to some observations made on atoms.

When he shot the gold foil, most of the \alpha-particles passes through the foil undeflected nor absorbed. This faction of the particles propagated the foil as if there was nothing placed on their path.

The surprising behavior of a few of the \alpha-particles was that they were deflected from their initial path on hitting the gold foil.

This implies that there is a part of the gold foil which has the same charge as the \alpha-particles, and more massive than the particles. Thus, he was able to determine the nucleus of an atom.

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